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Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - Solution-processed thin film transistors incorporating YSZ gate dielectrics processed at 400 °C
AU - Antoniou, Giorgos
AU - Halcovitch, Nathan R.
AU - Mucientes, Marta
AU - Milne, William I.
AU - Nathan, Arokia
AU - MacManus-Driscoll, Judith L.
AU - Kolosov, Oleg V.
AU - Adamopoulos, George
PY - 2022/3/31
Y1 - 2022/3/31
N2 - This work investigates a solution process for yttria-stabilized zirconia (YSZ) thin film deposition involving the addition of yttria nanoparticles,at 400 ○C, in air. Different yttrium doping levels in the YSZ were studied and a wide range of optical, structural, surface, dielectric,and electronic transport properties were also investigated. An optimum yttrium doping level of 5% mol. resulted in the smoothest films(RRMS ∼ 0.5 nm), a wide bandgap (∼5.96 eV), a dielectric constant in excess of 26, and a leakage current of ∼0.3 nA cm−2 at 2 MV/cm. Thesolution-processed YSZ films were incorporated as gate dielectrics in thin films transistors with solution-processed In2O3 semiconductingchannels. Excellent operational characteristics, such as negligible hysteresis, low operational voltages (5 V), electron mobility in excess of36 cm2 V−1 s−1, high on/off current modulation ratio on the order of 107, and low interfacial trap density states (<1012 cm−2), were demonstrated.In addition, excellent film homogeneity was achieved over a large area (16 × 16 cm2), with both film thickness and capacitancedeviation of <1.2%.
AB - This work investigates a solution process for yttria-stabilized zirconia (YSZ) thin film deposition involving the addition of yttria nanoparticles,at 400 ○C, in air. Different yttrium doping levels in the YSZ were studied and a wide range of optical, structural, surface, dielectric,and electronic transport properties were also investigated. An optimum yttrium doping level of 5% mol. resulted in the smoothest films(RRMS ∼ 0.5 nm), a wide bandgap (∼5.96 eV), a dielectric constant in excess of 26, and a leakage current of ∼0.3 nA cm−2 at 2 MV/cm. Thesolution-processed YSZ films were incorporated as gate dielectrics in thin films transistors with solution-processed In2O3 semiconductingchannels. Excellent operational characteristics, such as negligible hysteresis, low operational voltages (5 V), electron mobility in excess of36 cm2 V−1 s−1, high on/off current modulation ratio on the order of 107, and low interfacial trap density states (<1012 cm−2), were demonstrated.In addition, excellent film homogeneity was achieved over a large area (16 × 16 cm2), with both film thickness and capacitancedeviation of <1.2%.
U2 - 10.1063/5.0079195
DO - 10.1063/5.0079195
M3 - Journal article
VL - 10
JO - APL Materials
JF - APL Materials
SN - 2166-532X
IS - 3
M1 - 031109
ER -